Home / 27,840.80-41,760.60-18,540.40

Finding the Fourth Proportional to 27,840.80, 41,760.60 and 18,540.40

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Solution

The fourth proportional to 27,840.80, 41,760.60 and 18,540.40 is: 27,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.80 : 41,760.60 = 18,540.40 : x
  2. Step 2: Convert to fraction form
    27,840.80/41,760.60 = 18,540.40/x
  3. Step 3: Cross multiply
    27,840.80x = 41,760.60 × 18,540.40
  4. Step 4: Simplify right side
    27,840.80x = 774,258,228.24
  5. Step 5: Solve for x
    x = 774,258,228.24/27,840.80
  6. Step 6: Final answer
    x = 27,810.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.